Improvement in sharpening-surfaces



]E'.. PFARRE--.- Sharpening Surfaces.

No. 207,892; Patented S ept. 10,1878.

figwob a x N, PETERS, PNOTO-UTHOGRAPHER, WASHINGTON. D C.

UNITED STATES PATENT OEEIoE.

EDWYARD PFARRE, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN SHARPENING-SURFACES.

Specification forming part of Letters Patent No. 207,892, dated September 10, 1878; application filed Angust QG, 1 878.

To all whom it may concern.

Be it known that I, EDWARD PFARRE, of Brooklyn, in the State of New York, have invented an Improvement in Sharpening-Surfaces for Surgical Instruments and Cutlery, of which the following is a specification:

Strops for razors and other articles of cutlery have been made of leather and webbing, and it is usual to apply a-paste to the surface to aid in drawing out the edge of-the blade and producing the desired sharpness. I have discovered that a sharpening-surface or strop made of ground cork mixed with linseed or other drying oil makes a superior surface for stropping cutlery, especially when the usual strop-paste is applied to the same. The slab or surface of ground cork is porous, and the paste is received into the pores, so as to maintain a proper surface for the blade to be stropped upon. Such surface is free from the fiber of either leather or webbing, and being of exceedingly fine texture insures a corresponding fineness in the edge of the blade. The mixture of ground cork and linseed-oil is, by preference, spread upon a piece of wood or other suitable material and consolidated by pressure and allowed to dry.

In the manufacture of surgical-instrument cases it is advantageous to place this stropping-surface in the top of the case and allow the same to project slightly, so as to be in place for use.

In the drawing, Figure 1 illustrates this mode of applying the strop a in the lid 1) of the case 0, that contains the surgical instruments d. The scissors f pass in beneath the strop. Fig. 2 is a section'representing the ground cork and linseed-oil strop a upon the wood foundation 6.

I claim as my invention- The strop for cutlery and surgical instruments composed of a surface of ground cork and linseed-oil, substantially as and for the purposes set forth.

Signed by me this 23d day of August, 1878.

EDWARD PFARRE.

Witnesses: v

HAROLD SERRELL, OHAs. H. SMITH. 

